How Many Millennials There Are In The UK?

There are around 16.8 million Millennials in the United Kingdom (2024). This generation, sometimes called Generation Y were roughly born between 1980 and 2000 and are mainly the children of the post-war Baby Boomer generation.

As of 2023, Millennials were the largest generational cohort in the UK followed by Generation X at 14.04 million people, Baby Boomers at 13.57 million, and then by Generation Z at 12.7 million (18.8% of the population) living in the UK (as of 2021 data).

The most numerous single-year of age for Millennials, and the UK as a whole, was 35 at 956,116.

The first cohort of Millennials came of age at the turn of the century and have almost certainly been heavily influenced by the growth of internet accessibility during this time.

Being the first truly digital generation, whose unique life experiences have changed the way we live, work and consume, it is believed that the lifestyles and attitudes of this generation are one of the fundamental causes of the rapidly changing world.

Since early 2016, Millennials have come to the center of the UK media attention.

The growing interest in the topic shows in my monthly visits, too. I now get 50,000-70,000 unique visitors a month.

The Google Trends map below shows the spike in the search term “millennials” in the UK since Jan-April 2016, the time my blog started rapidly growing.

Being the most talked about generation in history, there is a myriad of research conducted on Millennials in the US and in the UK.

In 2017 UK Millennials became the largest generation in the workforce as a record number of Baby Boomers headed to retirement.

Mainstream media accuses Millennials of being lazy, entitled narcissists, who aren’t able to function without a smartphone. For a more holistic view, read about Millennial characteristics and Millennial facts – the two pages, that I constantly update with objective research.